AP BIOLOGY

Detailed explanation-1: -With a random population distribution, organisms are clustered together in groups. A positive population growth rate means a population is increasing. Species that live in unstable environments are usually r-selected, and their population size is usually well below the carrying capacity.

Detailed explanation-2: -The organisms in a population may be distributed in a uniform, random, or clumped pattern. Uniform means that the population is evenly spaced, random indicates random spacing, and clumped means that the population is distributed in clusters.

Detailed explanation-3: -In a random distribution, individuals are spaced at unpredictable distances from each other, as seen among plants that have wind-dispersed seeds. In a clumped distribution, individuals are grouped together, as seen among elephants at a watering hole.

Detailed explanation-4: -Individuals that are grouped into patches have a clumped distribution, or aggregated distribution. This can occur if resources are distributed unequally; for example, pipevine swallowtail caterpillars would be clumped in areas with their host plant, California pipevine.

Detailed explanation-5: -Random distribution occurs where resources are distributed evenly or sporadically. Dandelions grow in a random pattern, as do many other plants whose seeds are distributed by wind. Clumped distributions are found in places where resources are patchy.